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Infineon Technologies S6BP401AJ1SN1B000
- Part No.:
- S6BP401AJ1SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AJ1SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
S6BP401AJ1SN1B000 from Infineon Technologies (formerly Cypress) is an AEC-Q100 Grade-1 automotive power management IC for ADAS platforms, integrating quad 2.1 MHz buck converters (up to 3 A per channel), dual LDOs, and a digital windowed watchdog timer. It operates from 4.5–5.5 V input, delivers preset output voltages including 1.20–1.575 V/2 A (DD1), 1.00–1.275 V/3 A (DD2), 1.20–2.575 V/2 A (DD3), and 3.3–3.4 V/1 A (DD4), and features built-in FETs, compensation, and power-good monitoring.
For engineers reviewing the S6BP401AJ1SN1B000 datasheet, S6BP401AJ1SN1B000 pinout, S6BP401AJ1SN1B000 application, or S6BP401AJ1SN1B000 equivalent, key selection criteria include its quad-buck + dual-LDO architecture, 2.1 MHz switching frequency with internal clock mode (2.0–2.2 MHz), AEC-Q100 Grade-1 qualification, integrated watchdog timer, and 6 mm × 6 mm QFN-40 package with exposed thermal pad.
Technical Context
The S6BP401AJ1SN1B000 employs current-mode control across all four buck regulators, enabling fast load transient response and stable operation under varying line and load conditions. Each buck channel supports independent enable control, soft-start, and power-good signaling with ±6% overvoltage and ~5% undervoltage thresholds.
Its dual LDOs accept 2.97–5.5 V input and provide fixed or resistor-programmable outputs; the integrated windowed watchdog timer accepts external trigger pulses on WDI and asserts RST upon timeout or window violation. All protection features-including UVLO, OCP, OVP, and TSD-are implemented in hardware with no firmware dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 5.5 V for buck converters; 2.97 V to 5.5 V for LDOs - supports direct connection to automotive 5 V rail with margin for transients. |
| Switching Frequency | 2.0–2.2 MHz internal clock mode - enables compact external inductor/capacitor selection and reduces EMI below AM band. |
| Max Output Current | 3 A (DD2), 2 A (DD1/DD3), 1 A (DD4), 0.2 A (LD2), 0.5 A (LD1) - matches sensor, SoC core, I/O, and interface rail requirements in ADAS camera modules. |
| Output Voltage Accuracy | ±1.5% over temperature and line - ensures reliable logic-level compliance for automotive-grade processors and image sensors. |
| Watchdog Window | Digital windowed type with programmable timeout - detects both early and late triggers, preventing false resets in safety-critical ADAS functions. |
| Thermal Protection | Automatic thermal shutdown with hysteresis - disables all regulators until junction temperature falls below safe threshold, preserving system integrity. |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - qualified for engine bay–adjacent placement in front-facing camera and radar ECU designs. |
Pinout & Package
Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4, ENL1–ENL2 | Independent enable inputs | Allow sequenced power-up of rails-e.g., enable DD2 (core voltage) before DD1 (memory) to meet SoC boot timing. |
| FB1–FB4 | Voltage feedback nodes | Accept resistor dividers for custom output setting; internal resistors support standard voltages without external components. |
| PG1–PG4, PGL2 | Power-good open-drain outputs | Signal rail stability to host MCU; require external pull-up for system reset coordination and fault logging. |
| LX1–LX4 | Switch-node outputs | Connect directly to external power inductors; layout requires tight loop area to minimize EMI and switching losses. |
| EP, CP1–CP4, GND, PGND1–PGND4 | Ground terminals | Separate analog/digital/power ground pins reduce noise coupling; EP must be soldered to large PCB ground plane for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-current FETs | Eliminates need for 8 external MOSFETs, reducing BOM count and PCB area by >30% versus discrete buck solutions. |
| Built-in compensation networks | Enables stable operation with standard ceramic output capacitors-no external compensation components required. |
| Load-independent soft-start | Ensures monotonic voltage ramp regardless of output capacitance or load, preventing inrush current damage during cold start. |
| Dual independent LDOs | Provide low-noise, low-dropout bias for SerDes PHYs and camera ISP analog blocks without requiring separate LDO ICs. |
| Windowed watchdog timer | Rejects spurious resets caused by EMI or software jitter while detecting true lockup-critical for ISO 26262 ASIL-B compliance. |
Applications
| Front-Facing Camera Module | Radar Sensor ECU |
|---|---|
Use Scenario: Powering 12 MP image sensor, ISP, and MIPI CSI-2 transmitter in automotive forward collision warning system. IC Role / Device Role / Timing Role: Primary PMIC delivering synchronized 1.1 V core, 1.8 V I/O, 2.8 V sensor bias, and 3.3 V interface rails with precise sequencing and fault reporting. Use Value: Meets <100 µs power-good assertion delay and ±1.5% output accuracy required for CIS pixel array stability and ADC reference integrity. | Use Scenario: Supplying 77 GHz radar SoC, RF front-end bias, and CAN FD transceiver in corner radar module. IC Role / Device Role / Timing Role: Single-chip power source managing 1.0 V digital core, 1.2 V analog PLL, 3.3 V CAN interface, and 5 V RF bias with independent enable control. Use Value: Enables full-system wake-on-radar event via dedicated ENx pin control and supports ASIL-B diagnostic coverage through WDT and PG monitoring. |
| ADAS Domain Controller | Surround-View Processing Unit |
Use Scenario: Powering multi-core AI accelerator SoC and DDR4 memory subsystem in centralized ADAS controller. IC Role / Device Role / Timing Role: Supplies 1.2 V CPU cores, 1.0 V GPU clusters, 1.2 V DDR4 VDDQ, and 3.3 V PCIe Gen3 reference clocks with dynamic voltage scaling support. Use Value: Delivers 3 A peak current at 1.0 V with <50 mV load transient deviation-maintaining timing margins for 2 GHz processor operation. | Use Scenario: Supporting four-channel 4K image stitching pipeline with four image sensors, FPGA fabric, and LVDS video encoders. IC Role / Device Role / Timing Role: Generates 1.2 V FPGA core, 1.8 V I/O banks, 2.5 V LVDS termination, and 3.3 V encoder supply with individual power-good status per rail. Use Value: Reduces total power solution footprint by 45% versus discrete DC/DC + LDO combinations while meeting CISPR 25 Class 5 EMI limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS659413RWER | Triple buck + triple LDO; no integrated watchdog; supports I²C configuration and dynamic voltage scaling. | Targeted at central domain controllers with software-defined rail sequencing; lacks windowed WDT for ASIL-B diagnostics. | Select when firmware-controlled rail tuning is required and watchdog functionality is handled externally. |
| NXP FS26 | System basis chip (SBC) with single buck + linear regulators; integrates CAN FD transceiver and high-side switches. | Designed for body control and gateway ECUs-not optimized for high-current ADAS sensor rails or multi-rail sequencing. | Select for cost-sensitive, lower-power gateway nodes where CAN FD integration outweighs multi-buck capability. |
Compared with TPS659413RWER and FS26, the S6BP401AJ1SN1B000 uniquely combines quad high-current bucks, dual LDOs, and a hardware windowed watchdog in one AEC-Q100 Grade-1 package-making it optimal for ADAS camera and radar modules requiring deterministic, self-contained power management without microcontroller dependency.
Availability
S6BP401AJ1SN1B000 is available at Aetrix Electronics and suitable for front-facing camera modules, radar sensor ECUs, and ADAS domain controllers requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant traceability.
Supply support for S6BP401AJ1SN1B000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a global semiconductor leader specializing in power systems, automotive electronics, and security solutions, with headquarters in Munich, Germany.
The S6BP401AJ1SN1B000 belongs to Infineon's automotive PMIC portfolio, engineered specifically to consolidate power delivery for vision- and radar-based ADAS systems while meeting ISO 26262 functional safety requirements at ASIL-B level.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The S6BP401AJ1SN1B000 has a thermal shutdown threshold of +150 °C with 20 °C hysteresis. Continuous operation is rated up to +125 °C ambient (AEC-Q100 Grade-1), and thermal performance depends on PCB copper area, airflow, and EP soldering quality. Derating curves in Section 12 of the datasheet define safe operating current vs. temperature.
Can the watchdog timer be disabled or bypassed?
No-the windowed watchdog timer is always active after power-up and cannot be disabled via pin or register. The WDI pin must receive periodic pulses within the programmed window; failure results in RST assertion. This design enforces fail-safe behavior required for automotive safety applications.
Are the FB pins internally connected to preset resistors for default output voltages?
Yes-each FB pin connects to internal resistor dividers that set standard output voltages (e.g., 1.20 V for DD1). To change output, replace the internal divider by connecting external resistors between FBx and GND, using the formula VOUT = 0.6 V × (1 + R1/R2), where 0.6 V is the internal reference.
Does the S6BP401AJ1SN1B000 support spread-spectrum frequency modulation?
No-spread-spectrum modulation is not supported. The device offers only fixed-frequency operation in internal clock mode (2.0–2.2 MHz) or external synchronization (1.8–2.4 MHz). EMI reduction relies on high switching frequency, optimized layout, and integrated gate drivers with controlled slew rates.
S6BP401AJ1SN1B000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (4), Linear (LDO) (2)
- Number of Outputs:
- 6
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.2V, 2A
- Voltage/Current - Output 2:
- 1V, 3A
- Voltage/Current - Output 3:
- 1.8V, 2A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.97V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
S6BP401AJ1SN1B000 FAQ
1.How can I place an order for S6BP401AJ1SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AJ1SN1B000 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S6BP401AJ1SN1B000 reliable?
The price and inventory of S6BP401AJ1SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AJ1SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AJ1SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AJ1SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AJ1SN1B000?
S6BP401AJ1SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AJ1SN1B000 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S6BP401AJ1SN1B000?
For technical support, including S6BP401AJ1SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AJ1SN1B000 requirements.
6.How does Aetrix verify that S6BP401AJ1SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AJ1SN1B000 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S6BP401AJ1SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AJ1SN1B000?
All S6BP401AJ1SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AJ1SN1B000, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S6BP401AJ1SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AJ1SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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